CN112394468A - Pressure-relief sealed infrared lens and manufacturing method thereof - Google Patents
Pressure-relief sealed infrared lens and manufacturing method thereof Download PDFInfo
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- CN112394468A CN112394468A CN202011266691.1A CN202011266691A CN112394468A CN 112394468 A CN112394468 A CN 112394468A CN 202011266691 A CN202011266691 A CN 202011266691A CN 112394468 A CN112394468 A CN 112394468A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- 230000003287 optical effect Effects 0.000 claims abstract description 119
- 238000007789 sealing Methods 0.000 claims abstract description 51
- 238000004891 communication Methods 0.000 claims abstract description 37
- 230000002093 peripheral effect Effects 0.000 claims abstract description 25
- 239000000565 sealant Substances 0.000 claims description 20
- 229920001971 elastomer Polymers 0.000 claims description 7
- 238000003384 imaging method Methods 0.000 abstract description 7
- 230000008859 change Effects 0.000 abstract description 6
- 230000006837 decompression Effects 0.000 abstract description 6
- 238000003825 pressing Methods 0.000 description 10
- 230000008901 benefit Effects 0.000 description 4
- 239000003292 glue Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229920002379 silicone rubber Polymers 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/021—Mountings, adjusting means, or light-tight connections, for optical elements for lenses for more than one lens
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/025—Mountings, adjusting means, or light-tight connections, for optical elements for lenses using glue
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Abstract
The invention discloses a pressure-relief sealed infrared lens and a manufacturing method thereof. The sealed infrared camera lens of decompression includes: the lens barrel is open at two axial ends; the first optical lens is arranged in the lens barrel and is coaxial with the lens barrel; the second optical lens is arranged in the lens barrel and is coaxial with the lens barrel, the second optical lens and the first optical lens are arranged at intervals, and the first optical lens, the second optical lens and the lens barrel structure positioned between the first optical lens and the second optical lens form a sealed space; the peripheral wall of the lens cone is provided with a communication channel, one end of the communication channel is communicated with the sealed space, and the other end of the communication channel is communicated with the open end at the other end of the lens cone. By adopting the invention, the pressure between the optical lenses can be eliminated on the premise of satisfying the full sealing of the infrared lens, the phenomenon that the imaging quality is influenced and even the lens is separated due to the change of the lens surface shape caused by overlarge pressure between the lenses is prevented, and the structure is simple, the reliability is high and the universality is strong.
Description
Technical Field
The invention relates to the field of optical machines, in particular to a pressure-relief sealed infrared lens and a manufacturing method thereof.
Background
The infrared lens is an important component of the thermal infrared imager. In the conventional infrared lens, most of the infrared lenses without glue sealing are installed in the pod or the shell, the sealing environment of the infrared lenses is ensured through the protection of windows of the pod and the shell, the installation environment of the infrared lenses is strictly required by the products, and the optical transmittance is reduced by the added windows. The infrared lens adopting the sealing glue meets the sealing requirement, but the influence of the pressure on the surface type of the lens during the lens assembly is not considered. Meanwhile, after the lenses are sealed by glue, the lenses are in a closed state, when the thermal infrared imager works, the lenses are influenced by the temperature of a working environment and the temperature inside the thermal infrared imager, and the air pressure between the lenses is increased to extrude the lenses, so that the surface shape of the lenses is possibly changed, the imaging quality is influenced, and even the lenses are separated. In order to meet the assembly process of the lens and the use requirements of the infrared thermal instrument under different environments, the design of the infrared lens must consider the sealing performance and eliminate the pressure of the lens at the same time.
Disclosure of Invention
The embodiment of the invention provides a pressure-relief sealed infrared lens and a manufacturing method thereof, which are used for solving the problem that the infrared lens in the prior art cannot meet the sealing performance and eliminate the lens pressure at the same time.
According to the embodiment of the invention, the pressure-relief sealed infrared lens comprises:
the lens barrel is open at two axial ends;
the first optical lens is arranged in the lens barrel and is coaxial with the lens barrel;
the second optical lens is arranged in the lens barrel and is coaxial with the lens barrel, the second optical lens and the first optical lens are arranged at intervals, and the first optical lens, the second optical lens and the lens barrel structure positioned between the first optical lens and the second optical lens form a sealed space;
and a communication channel is arranged on the peripheral wall of the lens cone, one end of the communication channel is communicated with the sealed space, and the other end of the communication channel is communicated with the open end at the other end of the lens cone.
According to some embodiments of the present invention, the lens barrel includes a tapered section whose aperture gradually decreases in a direction from one end to the other end of the tapered section;
the first optical lens, the second optical lens, and the necked-down section are configured to form a sealed space.
According to some embodiments of the invention, the communication channel comprises:
the first communication section extends along the axial direction of the lens cone, and one end of the first communication section penetrates through the inner wall surface of the necking section and is communicated with the sealed space;
the second communicating section extends along the radial direction of the lens cone, the other end of the first communicating section extends to the second communicating section and is communicated with the second communicating section, and the other end of the second communicating section penetrates through the inner wall surface of one end of the lens cone and is communicated with the open end of the other end of the lens cone.
According to some embodiments of the invention, the other end of the first communicating section is connected to and communicates with one end of the second communicating section.
According to some embodiments of the present invention, the second communicating section penetrates through a peripheral wall of the lens barrel, and the other end of the first communicating section extends to and communicates with an intermediate section of the second communicating section;
and a sealing screw is arranged at one end of the radial outer side of the lens barrel on the second communication section and used for sealing the open hole of the second communication section.
According to some embodiments of the invention, a sealing rubber gasket is further arranged between the sealing screw and the opening of the second communication section.
According to some embodiments of the present invention, the lens barrel includes a first section and a second section, an axial end of the first section is hermetically connected to an axial end of the second section, an aperture of the first section is larger than an aperture of the second section, and the throat section is disposed at an end of the second section close to the first section.
According to some embodiments of the present invention, the outer peripheral wall of the first optical lens is hermetically connected to the inner peripheral wall of the lens barrel by a first sealant;
the outer peripheral wall of the second optical lens is connected with the inner peripheral wall of the lens barrel in a sealing mode through second sealant.
According to some embodiments of the invention, the pressure-relief sealed infrared lens further comprises: a first clamping ring for fixing the first optical lens and a second clamping ring for fixing the second optical lens.
The manufacturing method of the decompression sealing infrared lens according to the embodiment of the invention comprises the following steps:
manufacturing a lens barrel;
a second optical lens is arranged in a lens barrel, and an optical center deviation detector is used for adjusting the second optical lens so that the second optical lens is coaxial with the lens barrel;
and a first optical lens is arranged in the lens barrel, and the first optical lens is adjusted by an optical center deviation detector so as to be coaxial with the lens barrel.
By adopting the embodiment of the invention, the pressure between the optical lenses can be eliminated on the premise of meeting the requirement of full sealing of the infrared lens, and the phenomenon that the imaging quality is influenced and even the lens is separated due to the change of the lens surface shape caused by overlarge pressure between the lenses is prevented.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. In the drawings:
FIG. 1 is a schematic view of a pressure-relief sealed infrared lens structure in an embodiment of the invention;
fig. 2 is a flow chart of a method for manufacturing a pressure-relief sealed infrared lens in an embodiment of the invention.
Reference numerals:
the pressure-relief sealed infrared lens 1 is provided,
the lens barrel 10, the first section 110, the second section 120, the throat section 121, the communication channel 130, the first communication section 131, the second communication section 132,
the first optical lens 20 is provided with a first optical lens,
the first sealant 21 is applied to the first surface of the substrate,
the first pressing ring (22) is provided with a pressing ring,
a second optical lens 30 for a second optical lens,
a second sealing compound (31) is applied,
the second pressure ring 32 is provided with a second pressure ring,
the sealed space (a) is sealed,
sealing screw 40, sealing rubber pad 41.
Detailed Description
Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
As shown in fig. 1, a decompression sealing infrared lens 1 according to an embodiment of the present invention includes:
a lens barrel 10, both axial ends of the lens barrel 10 being open;
a first optical lens 20 disposed in the lens barrel 10 and coaxial with the lens barrel 10;
the second optical lens 30 is arranged in the lens barrel 10 and is coaxially arranged with the lens barrel 10, the second optical lens 30 and the first optical lens 20 are arranged at intervals, and the first optical lens 20, the second optical lens 30 and the lens barrel 10 positioned between the first optical lens 20 and the second optical lens 30 form a sealed space a in a structure;
the peripheral wall of the lens barrel 10 is provided with a communication passage 130, one end of the communication passage 130 communicates with the sealed space a, and the other end of the communication passage 130 communicates with the open end of the other end of the lens barrel 10. Thereby, the sealed space a can be in spatial communication with the lens barrel 10 outside the sealed space a through the communication passage 130.
By adopting the embodiment of the invention, the pressure between the optical lenses can be eliminated on the premise of meeting the requirement of full sealing of the infrared lens, and the phenomenon that the imaging quality is influenced and even the lens is separated due to the change of the lens surface shape caused by overlarge pressure between the lenses is prevented.
On the basis of the above-described embodiment, various modified embodiments are further proposed, and it is to be noted herein that, in order to make the description brief, only the differences from the above-described embodiment are described in the various modified embodiments.
As shown in fig. 1, according to some embodiments of the present invention, the lens barrel 10 includes a throat section 121, and an aperture of the throat section 121 is gradually reduced in a direction from one end to the other end of the throat section 121;
the first optical lens 20, the second optical lens 30, and the converging section 121 are configured to form a sealed space a. Thereby, the manufacture of the communication passage 130 can be facilitated.
As shown in fig. 1, according to some embodiments of the present invention, the communication passage 130 includes:
a first communicating section 131 extending in the axial direction of the lens barrel 10, one end of the first communicating section 131 penetrating the inner wall surface of the throat section 121 and communicating with the sealed space a;
the second communicating section 132 extends along the radial direction of the lens barrel 10, the other end of the first communicating section 131 extends to the second communicating section 132 and is communicated with the second communicating section 132, and the other end of the second communicating section 132 penetrates through the inner wall surface of one end of the lens barrel 10 and is communicated with the open end of the other end of the lens barrel 10.
According to some embodiments of the present invention, the other end of the first communicating section 131 is connected to and communicates with one end of the second communicating section 132.
As shown in fig. 1, according to some embodiments of the present invention, the second communicating section 132 penetrates the peripheral wall of the lens barrel 10, and the other end of the first communicating section 131 extends to and communicates with the intermediate section of the second communicating section 132. Thereby, the second communicating section 132 is prepared from the outside of the lens barrel 10, so that the preparation of the second communicating section 132 can be facilitated.
At one end of the lens barrel 10 in the radial direction, the second communicating section 132 is provided with a sealing screw 40, and the sealing screw 40 is used for sealing the opening of the second communicating section 132. Therefore, the opening of the second communicating section 132 can be shielded by the sealing screw 40, so that dust, impurities and water are prevented from entering the lens barrel 10, and the sealing performance of the lens barrel 10 can be guaranteed.
As shown in fig. 1, according to some embodiments of the present invention, a sealing rubber gasket 41 is further disposed between the sealing screw 40 and the opening of the second communication section 132. This can further improve the sealing effect of the seal screw 40.
As shown in fig. 1, according to some embodiments of the present invention, the lens barrel 10 includes a first section 110 and a second section 120, an axial end of the first section 110 is hermetically connected to an axial end of the second section 120, an aperture of the first section 110 is larger than an aperture of the second section 120, and a reduced section 121 is disposed at an end of the second section 120 close to the first section 110. The first and second segments 110 and 120 may be configured to form a step, and the first optical lens 20 may be mounted at the step, so that the mounting stability of the first optical lens 20 may be improved.
As shown in fig. 1, according to some embodiments of the present invention, the outer peripheral wall of the first optical lens 20 is hermetically connected to the inner peripheral wall of the lens barrel 10 by a first sealant 21;
the outer peripheral wall of the second optical lens 30 is hermetically connected to the inner peripheral wall of the lens barrel 10 by a second sealant 31.
As shown in fig. 1, according to some embodiments of the present invention, the decompression-sealed infrared lens 1 further includes: a first clamping ring 22 for holding the first optical lens 20, and a second clamping ring 32 for holding the second optical lens 30. The first pressing ring 22 is embedded in the lens barrel 10 and abuts against the first optical lens 20. The second pressing ring 32 is embedded in the lens barrel 10 and abuts against the second optical lens 30.
As shown in fig. 2, the method for manufacturing the above-mentioned decompression sealing infrared lens according to the embodiment of the present invention includes:
s1, manufacturing a lens barrel;
s2, the second optical lens is arranged in the lens cone, and the optical decentration detector is used for adjusting the second optical lens so as to enable the second optical lens to be coaxial with the lens cone;
s3, the first optical lens is arranged in the lens barrel, and the optical decentration detector is used for adjusting the first optical lens so that the first optical lens and the lens barrel are coaxial.
By adopting the embodiment of the invention, the pressure between the optical lenses can be eliminated on the premise of meeting the requirement of full sealing of the infrared lens, and the phenomenon that the imaging quality is influenced and even the lens is separated due to the change of the lens surface shape caused by overlarge pressure between the lenses is prevented.
The details of the decompression-sealed infrared lens 1 according to the embodiment of the present invention will be described below in a specific embodiment with reference to fig. 1. It is to be understood that the following description is illustrative only and is not intended to be in any way limiting. All similar structures and similar variations thereof adopted by the invention are intended to fall within the scope of the invention.
As shown in fig. 1, a decompression sealing infrared lens 1 according to an embodiment of the present invention includes: the lens barrel 10, the first optical lens 20, the first pressing ring 22, the second optical lens 30, the second pressing ring 32, the sealing screw 40, and the sealing rubber pad 41.
The lens barrel 10 is open at both axial ends. The lens barrel 10 comprises a first section 110 and a second section 120, wherein one axial end of the first section 110 is hermetically connected with one axial end of the second section 120, and the aperture of the first section 110 is larger than that of the second section 120. The end of the second section 120 near the first section 110 is a necked-down section 121. The aperture of the throat section 121 gradually decreases in a direction from one end to the other end of the throat section 121.
The first optical lens 20 is disposed in the lens barrel 10. The outer peripheral wall of the first optical lens 20 is hermetically connected to the inner peripheral wall of the lens barrel 10 by a first sealant 21. The second optical lens 30 is disposed in the lens barrel 10. The outer peripheral wall of the second optical lens 30 is hermetically connected to the inner peripheral wall of the lens barrel 10 by a second sealant 31. The first optical lens 20 and the second optical lens 30 are both disposed coaxially with the lens barrel 10.
The second optical lens 30 is spaced apart from the first optical lens 20, the second optical lens 30 and the first optical lens 20 are located at two ends of the throat section 121, and the first optical lens 20, the second optical lens 30 and the throat section 121 form a sealed space a.
The peripheral wall of the lens barrel 10 is provided with a communication passage 130. The communication passage 130 includes a first communication section 131 and a second communication section 132. The first communicating section 131 extends in the axial direction of the lens barrel 10, and one end of the first communicating section 131 penetrates the inner wall surface of the throat section 121 to communicate with the sealed space a. The second communicating section 132 extends in the radial direction of the lens barrel 10. The second communicating section 132 penetrates the peripheral wall of the lens barrel 10, and the other end of the first communicating section 131 extends to and communicates with the middle section of the second communicating section 132. The other end of the second communicating section 132 penetrates the inner wall surface of one end of the lens barrel 10 and communicates with the open end of the other end of the lens barrel 10.
At one end of the lens barrel 10 in the radial direction, the second communicating section 132 is provided with a sealing screw 40, and the sealing screw 40 is used for sealing the opening of the second communicating section 132. Therefore, the opening of the second communicating section 132 can be shielded by the sealing screw 40, so that dust, impurities and water are prevented from entering the lens barrel 10, and the sealing performance of the lens barrel 10 can be guaranteed. A sealing rubber pad 41 is also arranged between the sealing screw 40 and the opening of the second communication section 132. This can further improve the sealing effect of the seal screw 40.
The first pressing ring 22 is embedded in the lens barrel 10 and abuts against the first optical lens 20. The second pressing ring 32 is embedded in the lens barrel 10 and abuts against the second optical lens 30.
The preparation method of the decompression sealing infrared lens provided by the embodiment of the invention comprises the following steps:
1. the second optical lens 30 is arranged in the lens barrel 10, and the second optical lens 30 and the lens barrel 10 are coaxially arranged and adjusted by an optical decentration detector;
2. pouring a second sealant 31 between the second optical lens 30 and the lens cone 10, in order to ensure the uniformity of the sealant and reduce the influence of the sealant layer on the lens, the designed width of the gap between the second optical lens 30 and the lens cone 10 is 2mm, the sealant is applied layer by layer according to the thickness of the second optical lens 30, each layer is about 2mm to 3mm, the next layer can be sealed after each layer is cured at normal temperature for 24 hours after the sealant is applied, and the second sealant 31 is black 703 silicon rubber;
3. after the second optical lens 30 is sealed, the second pressing ring 32 is arranged in the lens barrel 10 and is firmly fixed;
4. the first optical lens 20 is arranged in the lens barrel 10, and the optical decentration detector is used for coaxially arranging the first optical lens 20 and the lens barrel 10;
5. pouring a first sealant 21 into a gap between the first optical lens 20 and the lens cone 10, wherein in order to ensure the uniformity of the sealant and reduce the influence of a glue layer on the lens, the designed width of the gap between the first optical lens 20 and the lens cone 10 is 2mm, the sealant is applied layer by layer according to the thickness of the first optical lens 20, each layer is about 2mm to 3mm, the next layer can be sealed after each layer is cured at normal temperature for 24 hours after the sealant is applied, and the first sealant 21 is black 703 silicon rubber;
6. after the first optical lens 20 is sealed, the first pressing ring 22 is arranged in the lens barrel 10 and is firmly fixed;
7. the sealing rubber pad 41 is arranged in the sealing screw 40 and then arranged in the second communication section 132 at the side of the lens barrel 10 together, and the tight fastening is realized.
After the thermal infrared imager provided with the sealed infrared lens is subjected to high-low temperature and rain environment tests, the lens surface type is not abnormal, the air pressure between the first optical lens 20 and the second optical lens 30 is consistent with the air pressure in the thermal infrared imager, and the phenomena of water leakage and the like do not occur. The tests prove that the design of the infrared lens with pressure relief seal can eliminate the pressure between lenses and meet the sealing requirement, and the design has universality.
By adopting the technical scheme, the invention at least has the following advantages:
1. the invention has simple structure, high reliability and strong universality;
2. the invention eliminates the pressure between the optical lenses on the premise of meeting the requirement of sealing the lens, prevents the phenomenon that the imaging quality is influenced by the change of the lens surface type caused by the overlarge pressure between the lenses in the lens assembly process, and prevents the phenomenon that the imaging quality is influenced by the change of the lens surface type and even the lens is separated from the infrared equipment when the air between the lenses is extruded by the pressure increase influenced by the temperature.
It should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention, and those skilled in the art can make various modifications and changes. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
In the description herein, references to the description of "some embodiments" mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Although some embodiments described herein include some features included in other embodiments instead of others, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. The particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. For example, in the claims, any of the claimed embodiments may be used in any combination.
Furthermore, the word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.
Claims (10)
1. An infrared lens of pressure relief seal, comprising:
the lens barrel is open at two axial ends;
the first optical lens is arranged in the lens barrel and is coaxial with the lens barrel;
the second optical lens is arranged in the lens barrel and is coaxial with the lens barrel, the second optical lens and the first optical lens are arranged at intervals, and the first optical lens, the second optical lens and the lens barrel structure positioned between the first optical lens and the second optical lens form a sealed space;
and a communication channel is arranged on the peripheral wall of the lens cone, one end of the communication channel is communicated with the sealed space, and the other end of the communication channel is communicated with the open end at the other end of the lens cone.
2. The pressure-relief sealed infrared lens of claim 1, wherein the lens barrel includes a constricted section, an aperture of which is gradually reduced in a direction from one end to the other end of the constricted section;
the first optical lens, the second optical lens, and the necked-down section are configured to form a sealed space.
3. The pressure-relief sealed infrared lens of claim 2, wherein the communication channel comprises:
the first communication section extends along the axial direction of the lens cone, and one end of the first communication section penetrates through the inner wall surface of the necking section and is communicated with the sealed space;
the second communicating section extends along the radial direction of the lens cone, the other end of the first communicating section extends to the second communicating section and is communicated with the second communicating section, and the other end of the second communicating section penetrates through the inner wall surface of one end of the lens cone and is communicated with the open end of the other end of the lens cone.
4. The pressure-relief sealed infrared lens as claimed in claim 3, wherein the other end of the first communicating section is connected to and communicates with one end of the second communicating section.
5. The pressure-relief sealed infrared lens according to claim 3, wherein the second communicating section penetrates through a peripheral wall of the lens barrel, and the other end of the first communicating section extends to and communicates with a middle section of the second communicating section;
and a sealing screw is arranged at one end of the radial outer side of the lens barrel on the second communication section and used for sealing the open hole of the second communication section.
6. The pressure-relief sealed infrared lens as claimed in claim 5, wherein a sealing rubber gasket is further provided between the sealing screw and the opening of the second communicating section.
7. The pressure-relief sealed infrared lens of claim 2, wherein the lens barrel comprises a first section and a second section, an axial end of the first section is hermetically connected with an axial end of the second section, an aperture of the first section is larger than an aperture of the second section, and the necking section is disposed at an end of the second section close to the first section.
8. The pressure-relief sealed infrared lens barrel according to claim 1, wherein the outer peripheral wall of the first optical lens is connected with the inner peripheral wall of the lens barrel in a sealing manner by a first sealant;
the outer peripheral wall of the second optical lens is connected with the inner peripheral wall of the lens barrel in a sealing mode through second sealant.
9. The pressure-relief sealed infrared lens of claim 1, further comprising: a first clamping ring for fixing the first optical lens and a second clamping ring for fixing the second optical lens.
10. A method of manufacturing a pressure-relief sealed infrared lens as claimed in any one of claims 1 to 9, comprising:
manufacturing a lens barrel;
a second optical lens is arranged in a lens barrel, and an optical center deviation detector is used for adjusting the second optical lens so that the second optical lens is coaxial with the lens barrel;
and a first optical lens is arranged in the lens barrel, and the first optical lens is adjusted by an optical center deviation detector so as to be coaxial with the lens barrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011266691.1A CN112394468B (en) | 2020-11-13 | 2020-11-13 | Pressure-eliminating sealing infrared lens and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011266691.1A CN112394468B (en) | 2020-11-13 | 2020-11-13 | Pressure-eliminating sealing infrared lens and manufacturing method thereof |
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| Publication Number | Publication Date |
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| CN112394468A true CN112394468A (en) | 2021-02-23 |
| CN112394468B CN112394468B (en) | 2024-06-14 |
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| CN104375253A (en) * | 2014-11-17 | 2015-02-25 | 中国科学院光电技术研究所 | Device and method for improving mechanical stability of imaging optics lens |
| CN107861215A (en) * | 2017-12-08 | 2018-03-30 | 北京空间机电研究所 | A kind of spatial transmission camera lens with deflation structure |
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| JP2020020828A (en) * | 2018-07-30 | 2020-02-06 | キヤノン株式会社 | Lens device |
| CN109613673A (en) * | 2018-12-11 | 2019-04-12 | 河北汉光重工有限责任公司 | A kind of wide warm infrared lens, its adjustment tooling and its Method of Adjustment |
| CN214122539U (en) * | 2020-11-13 | 2021-09-03 | 中国电子科技集团公司第十一研究所 | Pressure-relief sealed infrared lens |
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